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-// programmer-friendly.s Test file for AArch64 instructions variants that are
-// not part of the architectural assembly syntax but are supported for the
-// ease of assembly level programming.
-
-.text
- // The preferred architectural syntax does not accept the shifter
- // LSL or any other shift operator, when the destination register
- // has the shape of 16B or 8B.
- movi v0.16b, 97, lsl 0 // N.B.: this is now part of the architecture specification.
-
- // LDR Wt, label | =value
- // As a convenience assemblers will typically permit the notation
- // "=value" in conjunction with the pc-relative literal load
- // instructions to automatically place an immediate value or
- // symbolic address in a nearby literal pool and generate a hidden
- // label which references it.
- ldrsw x1, =0xdeadbeef
- ldrsw x7, u16_lable + 4
-
- // CCMN Xn, Xm, #uimm4, cond
- // As a convenience, GAS accepts a string representation for #uimm4,
- // e.g. NzCv for #0xa (0b1010).
- ccmp x1, x2, NzCv, GE
-
-.data
-u16_lable:
- .word 0xdeadbeef
- .word 0xcafebabe
-
-.text
- // UXT[BHW] Wd, Wn
- // Unsigned Extend Byte|Halfword|Word: UXT[BH] is architectural alias
- // for UBFM Wd,Wn,#0,#7|15, while UXTW is pseudo instruction which is
- // encoded using ORR Wd, WZR, Wn (MOV Wd,Wn).
- // A programmer-friendly assembler should accept a destination Xd in
- // place of Wd, however that is not the preferred form for disassembly.
- uxtb x15, w21
- uxth x7, w27
- uxtw x8, wzr
-
-
- // ADDS <Xd>, <Xn|SP>, <R><m>{, UXTB {#<amount>}}
- // In the 64-bit form, the final register operand is written as Wm
- // for all but the (possibly omitted) UXTX/LSL and SXTX
- // operators.
- // As a programmer-friendly assembler, we allow e.g.
- // ADDS <Xd>, <Xn|SP>, <Xm>{, UXTB {#<amount>}} by changing it to
- // ADDS <Xd>, <Xn|SP>, <Wm>{, UXTB {#<amount>}}.
- adds x0, sp, x0, uxtb #4
- adds x0, sp, x0, uxth #4
- adds x0, sp, x0, uxtw #4
-
- adds x0, sp, x0, sxtb #0
- adds x0, sp, x0, sxth #1
- adds x0, sp, x0, sxtw #2
-
- // More tests on
- // LDR Wt, label | =value
- // Find more comment above.
- ldr q0, =0xdeadcafebeefbabe0123456789abcedf
- ldr d0, =0xfebeefbabe012345
- ldr x0, =0xfebeefbabe012345
- ldr s0, =0xdeadbeef
- ldr w0, =0xdeadbeef
- ldr x0, =u16_lable